PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7827256-25Seal,conical,flared Tube Fitting

Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force · NSN 4730-01-070-3507 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-070-3507 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-070-3507. Primary manufacturer part number: 7827256-25.
Features
  • Seal,conical,flared Tube Fitting — FSC 4730
  • Body Length: 0.090 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
  • Hose/tube Outside Diameter for Which Designed: 0.750 INCHES NOMINAL IN
  • Seat Angle in Deg: 37.0
  • Outside Diameter: 0.958 INCHES MINIMUM AND 0.963 INCHES MAXIMUM IN
  • Material: ALUMINUM ALLOY 1100
  • Material Document and Classification: QQ-A-250/1,O FED SPEC 1ST MATERIAL RESPONSE OR AMS 4001 ASSN STD 2ND MATERIAL RESPONSE
  • Style Designator: SEAL
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Seal,conical,flared Tube Fitting, cataloged under National Stock Number 4730-01-070-3507, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-01-070-3507
Primary Part Number7827256-25
Item NameSeal,conical,flared Tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerAir Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
StatusCANCELLED
Body Length0.090 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
Hose/tube Outside Diameter for Which Designed0.750 INCHES NOMINAL IN
Seat Angle in Deg37.0
Outside Diameter0.958 INCHES MINIMUM AND 0.963 INCHES MAXIMUM IN
MaterialALUMINUM ALLOY 1100
Material Document and ClassificationQQ-A-250/1,O FED SPEC 1ST MATERIAL RESPONSE OR AMS 4001 ASSN STD 2ND MATERIAL RESPONSE
Style DesignatorSEAL
Wall Thickness0.010 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
6625-00-478-05957A12 INTERCHANGEABLE
Plug-in Unit,electrical-Electron
Tektronix, Inc.
4730-00-779-06197827256-43 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-00-907-40857827256-15 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-034-4805110-144-12A INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Bell Textron Inc
4730-01-070-31027827256-35 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-070-31037827256-11 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-070-83447827256-31 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-070-8582DY90-A-28 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Del Aerospace Inc Dba Del Aerospace Inc
4730-01-070-98897827256-27 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
Cross-Reference Index
Part NumberManufacturer
SECO7A12 Seco Seals, Inc (USA)
DY90 Del Aerospace Inc Dba Del Aerospace Inc (USA)
261-0320-005 The Boeing Company Div Legacy Boeing Hb1 (USA)
7827256 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
DY90-A-12 Signal-Hill Corp (USA)
7827256-25 PRIMARY Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
DY90-A-12 Del Aerospace Inc Dba Del Aerospace Inc (USA)
7A12 Seco Seals, Inc (USA)
Related Parts
6625-00-478-0595INTERCHANGEABLE
PLUG-IN UNIT,ELECTRICAL-ELECTRON
7A12
4730-00-779-0619INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-43
4730-00-907-4085INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-15
4730-01-034-4805INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
110-144-12A
4730-01-070-3102INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-35
4730-01-070-3103INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-11
4730-01-070-8344INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-31
4730-01-070-8582INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
DY90-A-28
4730-01-070-9889INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-27

Frequently Asked Questions

What is NSN 4730-01-070-3507?

NSN 4730-01-070-3507 is a Seal,conical,flared Tube Fitting, manufactured by Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-01-070-3507?

NSN 4730-01-070-3507 has 8 cross-referenced part numbers: SECO7A12 (Seco Seals, Inc), DY90 (Del Aerospace Inc Dba Del Aerospace Inc), 261-0320-005 (The Boeing Company Div Legacy Boeing Hb1), 7827256 (Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force), DY90-A-12 (Signal-Hill Corp) and 3 more.

What NSN replaces 4730-01-070-3507?

There are 9 known substitutes for 4730-01-070-3507: 6625-00-478-0595, 4730-00-779-0619, 4730-00-907-4085 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 7827256-25?

Key specifications for 7827256-25: Body Length: 0.090 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN; Hose/tube Outside Diameter for Which Designed: 0.750 INCHES NOMINAL IN; Seat Angle in Deg: 37.0; Outside Diameter: 0.958 INCHES MINIMUM AND 0.963 INCHES MAXIMUM IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-01-070-3507 still in active supply?

NSN 4730-01-070-3507 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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